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Agiwii M H. FEmTING MECHANISM FOR THOMAS CALCULATING mean! 5 HAVING A KEY ADJUS filled 00%. 27', 1922 v Jheets--$heet 1 H. iiQEQiEIBT PRINTING MECHANISM FOR THOMAS CALCULATING MACE-121N135 HAVIHG A KEY ADJUSTMENT Filad Get. 2'7 19,393 5hee 'bs- -Shea't OQGG @mQQ CIQRDT EQTZEIG MECHMZISM FOR THOMAS CALCULATING FAX MACHENES HAVING A KEY ADJUSTMENT Filed Oct. 27, 922 2 Sheets-6mm 5 Ed P! 3 mm 1 HUGS QQRDET, Kilt" BERLIN, GERMANY, ASSIGNOE TO GARE LIh'iDSlliR-fihil AKTHE-NQ EE EE.- SUEAFT, 013 BER-LIN, GERIJZAE'ITY.

EHYJWEZNG MEQELANISM FOR THOMAS CALCULATING Ts'LhGHINES HAW'NG A L QEY ADJUSTMENT.

Application flledhctober 2'7, 1922. Serial 1%. 5975A)".

o of? whom it may] concern:

Be it known that I, Hose Conor, of Ger-- man nationality, residing at Berlin Germany, have invented certain new and useful Improvements in and Relating to Printing- Mechanisms for Thomas Calculating Machines Having; a Key Adjustment: and I do hereby declare the following to he a full, clear, and exact description of the invention, of which the following is a specification.

The present invention relates to a printing mechanism for Thomas calculating machines having a key adjustment and especially to such Thomas calculating machines which have the step rolls arranged vertically to the machine plate and the transmission to the counting mechanism eii'ected by spur Wheel drives.

The characteristic feature of the invention consists therein thatthe levers actuating the adjusting Wheels and moved from the lUW-S the'sten sectors are set simultaneouslv whi-h accoi'dino' to their having, been set limit the path 01 tooth sectors and move the printing type Wheels so that the latter according: to the keys oi the calculating machine are also in order then to be projected against a printing? roll.

Upon the accompanying" drawings one mode of cai ryine' out the invention is fllGWl'l by wa of example and it is- ."F i View of the calculating machine EiiGWlDQ the main parts of the key mechanism tor the adjusting: mechanism of the printing device,

Fig. 2 a "plan,

Fig. 3 a hack view,

Fig. 4% shows in a side view the adjustment of the step sectors and the drivino; n'iechanisms for the printing tyne Wheels.

5 in eiront view and li ies. 6 and i on an enlarged scale the mechanism for the zero printing,

8 in a side view and Fig. 9, in a plan the supporting: strap with driving lever torthe printing type Wheels.

Referring to Figures 1 to 3 1 denotes keys in the machine frame 2 for ad iusting the known setting levers 3 which on pins 6 and which by means of extended arms 5 drive the known step roll "wheeis 4-,. Un these setting ievers 3 are animated arms '2 with a downward crank and an extension to the rear carrying the step sectors 8. Every step sector is fitted with 9 steps each one of Which corresponding to a simple figure according to the value of the figure of a pressed down he 1.

The step sectors 8 mounted eccentricallv with regerdto the pivot 6 so that according to the raising of these sectors 8 their distance from the pins 9 of the too-h sectors 10 swinging; shout the shaft 11 is altered.

. On the shaft 11 is mounted a sti a'p 12 with a traverse 13 SiL-TllUUQ' against the to th tors 10.- The strap 12 is turned about the shaft 11 from a crank handle'mounted on the main shaft 14: with the aid of discs 1'? having curved slots 16 by arms 18 of the strap 12 having rolls enoa rina with th e curved slots 1 6. With everv pulling at the crank if; and turningoff the shait hi the arms 18 are therefore swung out in such a manner that the strap 12 and the tooth sectors 10 move in the direction of the arrow 19.

Now the tooth sectors-l0 are coupled with the strap 12 by means of shrines 20. certain key has been pressed down and con tension.

Thus by pressing down the keys 1 and hv pulling the crank '15 the tooth seeinents 10 are set a cording to the value of the figure oi the pressed hey ii The movement or the toot segments 10 is transmitted to a set of printing type wheels 21.

These printin t Y e wheels 21 I: 4

arranged side by side (compete for instance Fin. 9 are provided with toothed wheels 22 which 25h with the tooth segments 10.

They are mounted so that they can rotate independentlv on the shaft 23 of a common strap 2 1- (Fig. 8; which swings about a fixed axle and W rod For this pi. :e 26 is positive connected ich is moved h"-" a drawin A V 33 o lever 28 st ing m." DIOw P cam] Aides 1 1e Zr-"01m rence pins mounted 0 Q Lb 11 Au in om was;

masses .the slide pieces 36 of the rail 33 they can also be arranged in the slide rail 33 swing-- mg about parallel axles or pins and cousuch a manner that upon a swinging-out of the foremost projections 37 those following to the right are also swung out by the action of the spring, while in case of a prevention of the turning of the axle of a projection 37, perhaps by an arm which can be lowered to the respective axle entering into the reach of a swung out step sector, the projections following td-lthe, right also remain idle.

the said driving segenients for the printing .30- type Wheels and a bar oscillatably supported in the frame of the machineand rovided with slide pieces which are movalily supported thereon, the said graded sectors cooperating with said bar.

2. Printing mechanism for Thomas calculating machines, as set forth in claim 1, and-including an oscillatory bar disposed for the purposepof printing a cipher at the might of 'a value to which the machine hasbeen adjusted, a main shaft havin" a cam disc to operate said bar, the said 'sli e pieces having adjustable projections and said bar causing a movement of said adjustable projections totake' along the said adjusting evers and thereby the sectors one step in correspondence with the cipher, while. an.

' does not take place as long as the said ad-'.'

advance of the corresponding graded sector justable projections are located outside the plane of the said ad usting levers. 3. Printing mechanism for Thomas cal:

culating machines, as set forth in claim 1, haractcrized in this that the said lugs are 1 'iounted on slidable or rotatable slide pieces, are provided with'slots and pins whereby they are guided relatively to each other and are also provided with interconnecting springs so arrangedthat upon displacement of a movement of a slide piece the next succeeding elements at the right thereof follow this movement, the first slide piece having an arm, an adjusting lever being provided for the gear segments, and said lever having an inclined surface to cooperate with said arm of the first slide piece. pied to each other by means ofsprings in- 4. Printing mechanism for Thomas calculating machines, as set forth in claim 1,' characterized in this that the slide pieces of the bar which are located at the ri ht of an adjusted sector, areprovided with locking arms, and the said adjusting levers having arms provided with cranked portions, said locking arms being arranged to pass, 111 the initlal position of the sectors,

the cranked portions of the arms of the adjustin levers, and being arranged in an intermec iary position of the sectors to enter the path of said oii'set cranked portions of the arms whereby lateral free displacement is prevented.

5. Printing mechanism for Thomas cal? culating machines with keyboard adjustment and in which printing type Wheels disposed in an oscillatory frame are advanced against the platen, comprisingadjusting levers, adjusting wheels, printing type wheels and driving segments, said adjusting levers for the adjusting wheels having graded sectors for the values 1 to 9 to limit the stroke of the said driving segments for the printing type wheels and a bar oscillatably supportedin the frame of the machine and provided with slide pieces which are Ymovably supported thereon, the said graded sectors cooperating with said bar, the said slide ieces having adjustable projections and said a movement of said adjustable projections to take along the said adjusting levers and thereby the sectors one step in correspond ence with the cipher, while an advance of the corresponding graded sector does not take place as long as the said adjustable-probar causing jections are located'outside the plane of the said. adjusting levers, said shiiing bar having parallel pivots and interconnecting springs, said adjustable projections being' mounted on said pivots, and said pivots being arranged to enter the first of the said I adj usting' levers. I

In testimony whereof I- have signed my name to this specification.

- HUGO'CORDT;

\Vitnesses: I

' HERMANN KEIBEL,

MAX FREUND. 

